The snow-covered peaks of Chacaltaya Mountain tower over the Bolivian capital, La Paz, rising 17, 800 feet above sea level.

白雪皑皑的恰卡塔雅峰顶要高出玻利维亚首都拉巴斯许多，这座山峰的海拔高度在17800英尺（5425米）。

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To see from the top of the tower, the foot of the mountain is a sea of trees.

从塔顶往下看，山下是成片的树林。

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The height people will reach is usually a mountain or a tower. Ancient literary figures have left many poems depicting the activity.

所谓登高，人们通常会登上高山或者高塔，古代的诗人也为此做了许多流传至今的诗句。

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Global landmarks that are going green on 17 March include Niagara Falls, the Leaning Tower of Pisa, Burj al Arab in Dubai, Table Mountain in South Africa, New York's Empire State Building and Berlin's TV Tower.

BBC: Queen answers Irish bid to turn Buckingham Palace green